22321-4244 I 1455 (HD 213436)
22h 32m 03.15s -42° 44' 24.4" P.A. 350.00 sep 0.3 mag 8.30,8.60 Sp K0IV dist. 139.08 pc (453.68 l.y.)
| Coord 2000 |
22321-4244 |
|
Discov num |
I 1455 |
|
Comp |
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Coord arcsec 2000 |
22 32 03.15 -42 44 24.4 |
|
| Date first |
1925 |
|
Date last |
2017 |
|
Obs |
15 |
|
| Pa first |
249 |
|
Pa last |
350.4 |
|
P.A. Now (θ) |
348.7° |
|
| Sep first |
0.3 |
|
Sep last |
0.329 |
|
Sep. Now (ρ) |
0.331" |
|
| Mag pri |
8.30 |
|
Mag sec |
8.60 |
|
delta mag (ΔM) |
0.3 |
|
Spectral class |
K0IV (yellow-orange) |
|
| Pri motion ra |
+017 |
|
Sec motion ra |
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|
| Pri motion dec |
+023 |
|
Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 213436 |
|
Constellation |
Grus |
|
SAO |
231187 |
|
HIP |
111223 |
|
| Tycho2 |
8003-00677-1 |
|
Gaia DR2 |
6521102210490215296 |
|
HD |
213436 |
|
CD |
CD-4315073 |
|
| CP |
CP-43 9626 |
|
Distance |
139.08 |
|
Distance ly |
453.68 |
|
ORBITAL ELEMENTS
| Period (P) | 79.7y | |
Periastron (T) | 1999.1y | |
Semi-major axis (a) | 0.336a | |
| Eccentricity (e) | 0.857 | |
Inclination (i) | 97.6° | |
Longitude of periastron (ω) | 65.8° | |
| Node (Ω) | 179.1° | |
Notes | n | |
Reference | Tok2018b | |
| Equinox | 2000 | |
Last observation | 2017 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
5.2 |
0.057 |
| 2001 |
0.2 |
0.116 |
| 2002 |
358.3 |
0.156 |
| 2003 |
357.1 |
0.187 |
| 2004 |
356.2 |
0.211 |
| 2005 |
355.5 |
0.232 |
| 2006 |
354.9 |
0.249 |
| 2007 |
354.4 |
0.263 |
| 2008 |
353.9 |
0.275 |
| 2009 |
353.5 |
0.286 |
| 2010 |
353.1 |
0.295 |
| 2011 |
352.7 |
0.303 |
| 2012 |
352.3 |
0.309 |
| 2013 |
352.0 |
0.315 |
| 2014 |
351.6 |
0.320 |
| 2015 |
351.3 |
0.323 |
| 2016 |
350.9 |
0.326 |
| 2017 |
350.6 |
0.329 |
| 2018 |
350.3 |
0.330 |
| 2019 |
350.0 |
0.332 |
| 2020 |
349.7 |
0.332 |
| 2021 |
349.4 |
0.332 |
| 2022 |
349.0 |
0.332 |
| 2023 |
348.7 |
0.331 |
| 2024 |
348.4 |
0.329 |
| 2025 |
348.1 |
0.327 |
| 2026 |
347.8 |
0.325 |
| 2027 |
347.4 |
0.323 |
| 2028 |
347.1 |
0.320 |
| 2029 |
346.7 |
0.316 |
| 2030 |
346.4 |
0.313 |
| 2031 |
346.0 |
0.309 |
| 2032 |
345.7 |
0.304 |
| 2033 |
345.3 |
0.300 |
| 2034 |
344.9 |
0.295 |
| 2035 |
344.5 |
0.290 |
| 2036 |
344.1 |
0.284 |
| 2037 |
343.6 |
0.278 |
| 2038 |
343.2 |
0.273 |
| 2039 |
342.7 |
0.266 |
| 2040 |
342.2 |
0.260 |
| 2041 |
341.6 |
0.253 |
| 2042 |
341.1 |
0.246 |
| 2043 |
340.5 |
0.239 |
| 2044 |
339.9 |
0.232 |
| 2045 |
339.2 |
0.224 |
| 2046 |
338.5 |
0.217 |
| 2047 |
337.7 |
0.209 |
| 2048 |
336.9 |
0.201 |
| 2049 |
336.0 |
0.192 |
| 2050 |
335.0 |
0.184 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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